What is the equation of a circle whose center is at the origin and whose radius is 16? x2 + y2 = 4 x2 + y2 = 16 x2 + y2 = 256

3.

Step-by-step explanation:

We are asked to find the equation of circle, whose center is at the origin (0,0) and whose radius is 16.

We know that standard form of a circle is in form: , where,

= Center of circle,

r = Radius of circle.

Upon substituting our given values in standard form of circle, we will get

Therefore, 3rd option is the correct choice.

(-1,-0.5)

step-by-step explanation:

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.